Wormwood Pug Moth larva (Eupithecia absinthiata)
Watch the first few seconds of the video below and you may understand why it took me a while to realise what this alien-looking thing actually was?
It was truly fascinating to watch as it arched and looped its way around the hemp agrimony upon which I found it.
The wormwood pug is a moth of the family Geometridae. The species was first described by Carl Alexander Clerck in 1759. It is a common species across the Palearctic region as well as North America. The species flies at night in June and July and is attracted to light.